Brake system of the car Opel Astra G

General information about the brake system
General information All car models covered in this manual are equipped with a hydraulic brake system with vacuum boost. The front wheels are always equipped...

Brake Specifications
Common parameters System type Front disc brakes, rear disc brakes or drum, depending on the model. Double hydraulic circuit with diagonal separation. Vacuum...

Anti-lock brake system (ABS) and traction control (TCS) — general information and fault codes
General information Anti-lock brake system (ABS) included as standard on all models. Anti-slip system (TCS) can be installed as an option on 2.0 l models ....

Bleeding the brake system
Bleed the brake system while wearing goggles. If brake fluid accidentally gets into your eyes, rinse immediately with plenty of water and seek medical...

Checking the condition and replacing brake lines and hoses
Approximately every six months, after lifting the vehicle, check all flexible hoses connecting the steel pipes of the hydraulic circuits to the wheel brakes...

Replacing the pads of the disc brake mechanisms of the front wheels
To prevent the vehicle from pulling to the side during braking, the brake pads must be replaced on both front/rear brakes at the same time. Remember that the...

Replacing the pads of the disc brake mechanisms of the rear wheels
To prevent the vehicle from pulling to the side during braking, the brake pads must be replaced on both front/rear brakes at the same time. Remember that the...

Replacement of shoes of drum brake mechanisms of back wheels
The replacement of the shoes must be carried out simultaneously on both brake mechanisms. Remember that the dust generated during the operation of the brake...

Check of a condition, removal and installation of a brake disk
Status check 1. Loosen the wheel bolts, jack up the vehicle and place it on jack stands. Remove the corresponding wheel, then replace a pair of wheel bolts to...

Removal, condition check and installation of a brake drum
Remember that the dust generated during the operation of the brake mechanisms may contain asbestos, which is extremely harmful to human health. Never blow off...

Removal, refurbishment and installation of front wheel disc brake calipers
Remember that the dust generated during the operation of the brake mechanisms may contain asbestos, which is extremely harmful to human health. Never blow off...

Removal, refurbishment and installation of rear wheel disc brake calipers
Remember that the dust generated during the operation of the brake mechanisms may contain asbestos, which is extremely harmful to human health. Never blow off...

Removal, service and installation of wheel cylinders of drum brake mechanisms of back wheels
In the event of a brake fluid leak, the wheel cylinders must be replaced without fail. Manufacturers do not recommend attempting to refurbish these brake...

Removal and installation of the main brake cylinder
A failed GTZ must be replaced. Manufacturers do not recommend attempting to rebuild the brake master cylinder. Removing The master brake cylinder is located in...

Removing and installing the foot brake pedal
Removing 1. Disconnect the negative cable from the battery and lay it aside. 2. Remove the dashboard (see chapter Onboard electrical equipment ). 3. Remove the...

Check of serviceability of functioning / tightness, removal and installation of assembly of the vacuum amplifier of brakes
Functional check 1. Without starting the engine, depress the foot brake pedal several times. Check that there is no change in pedal back travel (distance...

Removal, check of serviceability of functioning and installation of the check valve of the vacuum booster of brakes
Removing 1. Using a screwdriver, carefully remove the vacuum hose with adapter from the front of the brake booster servo assembly. 2. Disconnect the hose from...

Removal and installation of the brake booster servo vacuum pump (diesel models)
Removing 1. On models with 1.7 l engines the vacuum pump is mounted on the back of the generator. On engines 2.0 l the vacuum pump is mounted on the left side...

Check of serviceability of functioning of the vacuum pump of the brake booster servo drive (diesel models)
You will need a vacuum gauge to check. Examination The check is made using a vacuum gauge. 1. Disconnect the vacuum tube from the pump and connect a vacuum...

Parking brake actuator adjustment
Adjustment is made in accordance with the Routine Maintenance Schedule (see chapter Current service ), as well as every time after replacing or removing /...

Removal and installation of the parking brake lever
1. Remove the cover of the center console and the protective cover of the lever. 2. Completely unscrew the adjusting nut. 3. Remove the center console (see...

Removal and installation of parking brake cables
Removing On models with rear wheel drum brakes the drive cable consists of four sections: a short front (primary), connecting the control lever with the...

Removal, installation and adjustment of the gauge-switch of stoplights
Removing The sensor-switch is attached to the foot brake pedal bracket. 1. Remove the lower trim section of the instrument panel (see chapter Onboard...

Removal and installation of the gauge switch of a control lamp of a cocking of a parking brake
1. Remove the center console (see chapter Body ). 2. Disconnect from the lever of a lay brake of the gauge switch installed in front of an electroconducting....

Removal and installation of ABS and TCS components
Hydraulic modulator and electronic control unit (ECU) Removing 1. Remove the battery (see chapter Engine electrical equipment ). 2. Disconnect the two...

Removal, installation and adjustment of the pressure regulator valve in the hydraulic circuits of the brake mechanisms of the rear wheels
Removing 1. Support the front wheels with wheel chocks, jack up the rear of the vehicle and support it on jack stands. 2. Remove the cap from the GTZ...